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It's unclear, however, what form Scream will take. Per Twitter, various posters for the project have appeared in Europe advertising it as, "Michael Jackson Scream: Album Out Sept. 29th." But John Branca, co-executor of Jackson's estate, suggested that the project would not feature any unreleased music.

"I don't foresee us releasing any more unreleased music for quite some time," Branca said. "That doesn't mean there won't be interesting [new] record releases in the very near future."

"Now we have 'Thriller' 3D, and two more announcements are coming up in the next couple of weeks," Branca said. "Michael had an expression: 'The quality goes in before the name goes on.' So we are not ready to announce them yet."